7-【-3/4-5/6+5】/12/5 求你们了
问题描述：
7-【-3/4-5/6+5】/12/5 求你们了
答
7-【-3/4-5/6+5】/12/5 =7- 【-9/12-10/12+5】/(12/5)=7-【-19/12+60/12】/(12/5)=7-（41/12）/(12/5) =7-41/5=35\5-41/5=-6/5=-1.2
7-【-3/4-5/6+5】/12/5 求你们了
7-【-3/4-5/6+5】/12/5 =7- 【-9/12-10/12+5】/(12/5)=7-【-19/12+60/12】/(12/5)=7-（41/12）/(12/5) =7-41/5=35\5-41/5=-6/5=-1.2